Consider, if you will, the worst sight known to humanity.
Well. We've just turned a corner.
The Mighty Power Wallet comes with a 3000mAh battery (which can itself be recharged), and microUSB and Lightning cable adaptors.
It would apparently take between two and two-and-a-half hours to charge an iPhone 6 fully using it.
A spokesman for the company told MailOnline:
The battery is 3000mAh and is placed inside the wallet – it is well concealed and doesn't take up much room. It charges your phone on the go and you shouldn't need to buy a new battery.
It is rather expensive (£74.99), but it's made with Italian Saffiano leather which smells great (it says here).
The Mighty Purse, meanwhile, comes in four colours.
You can get it in black, purple, gold, and pink. It too has a small battery and a USB cable for charging.